Doorlock



Oct. 14 1924.

H, W. DYER DOORLOCK Filed July 5, 1922 2 Sheets-Sheet 1 I N VEN TOR.

Oct. 14 1924. 1,511,322

H. W. DYER DOORLOCK Filed July 5, 1922 2 Sheets-Sheet 2 I N VEN TOR.

I/ A TTORNEYM Patented Oct. 14, 1924.

UNITED STATES HARRY W. DY'ER, OF EAST ORANGE, NEW JERSEY.

DOORLOOK.

Application filed July 5,

To all whom it may concern:

Be it known that I, HARRY W. DYER, a citizen of the United States, and a resident of East Orange, in the county of. Essex and State of New Jersey, have invented certain new and useful Improvements in Doorlocks,

of which the following is a specification.

This invention relates to, door locks and particularly to an attachment for door locks whereby the locks may be unlatched by means extending across the door on one side. This invention has particularly for its object an attachment that may be applied to standard door locks and operated to release the look by pressure against the door in the centre and also by foot pres sure on a pedal near the bottom of the door. Either of these arrangements may be used singly or both may be used in combination,

on the one door so that the bar across the centre becomes, in fact, an emergency release for an exit door, whereas the pedal arrangement affords a means of unlatching by foot pressure such as is required in hospitals,

restaurants, etc., where operators have their hands occupied and require to open the door by the pressure of the foot or the pressure of the body against the door. These and other objects of the invention will be understood from the following specification and the accompanying drawings in which Fig. 1 shows an elevation of an ordinary door having the usual locking mechanism applied thereto, together with my invention.

:5 Fig. 2 is a side view corresponding to Fig.

1. Figs. 3, 4L and 5 show details of the operating mechanism used in Figs. 1 and 2. Fig. 5 shows a means for releasing the latch by foot pressure. Fig. 6 is a side elevation corresponding to Fig. 5. Figs 7 and 8 show an alternative construction of the operating mechanism, Fig. 9 shows a type of motion plate mechanism that may be substituted for the rotary mechanism shown in F i s. 1 and 2 and Fig. 10 shows a complete 0 to open outwardly and the locking mechanism is unlatched by pressure against the back of the door. This pressure'is usually applied through a horizontal bar located near the middle of the door which is support d'by pi arms and the ends" of 1922. Serial No. 572,775.

these arms are arranged to release the looking mechanism. The present invention relates to a construction of this type, but instead of building a special door lock for the purpose it is arranged as an attachment to the ordinary type of commercial door lock which may be operated by a latch or handle and can be applied without change or adjustment of the existing mechanism and also without interfering with the operation of the existing mechanism. The invention further contemplates a second horizontal bar placed near the bottom of the door and pivoted to move in a vertical plane so that it can be conveniently operated by foot pressure. Downward pressure on this bar or pedal raises a rod which operates to release the latch and thereby unlatch the door.

The structural details will be understood as illustrated in the drawings in which 11 represents a. door of the usual type, 12 is a mortise lock of the usual type having the latch 13 which is released by rotating the knob 15 on one side of the door and rotating a knob or operating a latch associated with the stem 16 on the opposite side of the door. The latch 13 is operated by a square shaft 26, Fig. 5 as is more commonly applied in commercial locks. On the end of this square shaft the socket 21 of knob 15 is secured by a set screw 25, Fig. 5 and usually has a thrust bearing in the shape of the collar 22. My invention is applied to an arrangement of this kind by the use of collar 24. secured on the socket 21 by the set screw 25 which also secures the knob 15 on shaft 26. This collar has an arm 23 with an arcuate extension 27 which s arranged to be engaged by the dog 28, Fig. 3 on the arm 80 pivoted at 29 in the bracket 31 so that as the arm 30 is moved inwardly, dog 28 engages 27 and thereby applies a rotary motion to shaft 26 which withdraws the latch 13 and unlatches the door. Arm 30 has secured theretothe horizontal bar 32' and the opposite side of the door is pro-- vided with another bracket arrangement exactly similar, supporting the other end of bar 32 so that the horizontal'bar across the. door will operate a right-or left-hand door lock without change. Usually the arms 30 are provided with a coil spring which holds them away from the door but these springs are not shown in the drawings. It will be noted that owing to the lost motion QQIIHBC:

tion between the arm 23 and the dog 28 the knob 15 maybe operated at any time independently of the movement of arm 30.

In certain applications it may be desirable to dispense with the knob 15 in which case no change is required otherthan to remove the knob and apply a collar similar to 52, Fig. 7 on the square shaft 26 having an arm 53 arranged to engage the dog of the extension 54 on arm 30 which is pivoted at 29 to bracket 51. In this case the bracket 51 itself may be substituted tor the thrust collar 22 shown in Fig. 1. This provides the lost motion connection between the arm 53 and the dog 25 so that the latch may be operated at any time from the opposite side of the door. I

For releasing the latch by foot pressure a horizontal bar or pedal 4-1 is provided across the bottom of the door pivoted to a bracket at 40 and having an arm 89 engaging jaw 38 in the vertical rod 34 sliding in the bearings 35 and 36 and arranged to engage the arm 23 so as to cause a partial rotation of this arm and thereby release the latch 13. This pedal is restored to the unlatching position by means of spring 37.

VVhena special mechanism is provided for the releasing of latch 13 operating for instance, by a motion plate and slide similar to the invention disclosed in my applica tion for United States patent, Serial No. 565,156, filed June 1, 1922, a construction similar to Fig. 9 is preferred. In this case the latch is indicated by 58 having a shank 64 with a pin 63 arranged to engage slot 62 in plate 61 which is screwed to the vertical operating plunger 57 which'may have extensions 59 and 60 for operating latches at the bottom and top of the door. The plunger when moved in one direction will cause the latch to be withdrawn and when moved in the opposite direction will cause the latch to be movedto the engaging position. This type of mechanism is arranged to be applied to either right or left-hand locks and may be adjusted for either condition simply by turning the motion plate 61 so as to bring the: other side uppermost. This will move the slot 62 into the position indicated by the dotted lines 65. An opening indicated by the dotted line 66 may be provided to engage the dog 28' as arranged in my previous invention.

It will be noted that with this invention several important results are obtained. The apparatus is comparatively simple, is readily adapted to the average type of commercial lock, does not require a lock to be specially built and can be applied to eXlSt-. ing locks and existing doors at present in use without any material change. It will be noted that exit door locks depend ing upon pressure against one side of the door'to release the latch naturally cause the open said door.

only holds the latch released but moves the door open in an easy manner.

Having thus described my invention, I

' claim 1. In a door lock of the class described, the combination of a latching mechanism with a latch, a rotating shaft with a knob for releasing said latch, a collar secured to the hub of said knob having an arm, a hori zontal bar engaging said arm Witha lost motion connection, a second horizontal bar pivotally secured to the foot of said door and engagingv said arm by a vertical plunger and so arranged that the door may be imlatche'd independently by said knob and by said horizontal bars.

2. In a door lock of the class described, the combination of a latching mechanism with a latch, a horizontal bar pivotally secured across said door near the middle, a second horizontal bar secured to said door by a plurality of pivots near the bottom,

said bars operatively connected with said.

mechanism and arranged to independently unlatch said mechanism.

8'. In a door lockof the class described, the combination of a latching, mechanism with a latch, a horizontal bar pivotally secured across said door near the middle, a second horizontal bar secured to said door by a plurality of pivots near the bottom, said bars operatively connected with said mechanism, one of said bars arranged to release said latch by pressure in ahorizontal plane and another of said bars arranged to release said mechanism by foot pressure in a vertical plane. I

1. In a door lock of the class described, the combination of a latching mechanism with a latch, a plurality of horizontal means each pivotally secured by a plurality of pivots to said door and operatively connected with said mechanism, one of said means releasing said latch by foot pressure in a vertical direction and the other of said means releasing said latch by pressure in a horizontal direction.

5. In a door lock- 01 the class described,- the combination of a latching? mechanism with a latch, a horizontal bar pivotally Se cured across said door near the middle, asecond horizontal bar secured to said door by a plurality of pivots near the bottom, said bars operatively connected with said mechanism, one of said bars arranged to release said mechanism by vertical pressure and the other of said bars arranged to hide pen-dently release said mechanism and to In ado'or leak of the described,

the combination of a latching mechanism With releasing means, a horizontal bar across the centre of said door and a horizontal bar pivoted at two points to the bottom of said door, said centre bar arranged to operate said releasing means by pressure against said bar towards said door and said bottom bar arranged to operate said releasing means by vertical movement.

7. In a door lock of the class described, the combination of a latching mechanism with releasing means, a hand operated device for releasing said mechanism, a horizontal bar across the centre of said door and a horizontal bar pivoted at two points to the bottom of said door, each of said bars and said hand operated device arranged to operate said releasing means independently of each other.

Signed this 22nd day of June, A. D. 1922.

HARRY W. DYE-R. 

